Yes, I can see I wasn’t thorough in my description of a capable computer.
My best computer, for creative projects, is my mid 2012 Aluminum MacBook Pro because it has multiple ports, (headphone-Mic/optical/USB/SD card/Display/Firewire/Ethernet and an internal optical drive), and I use these irreplaceable features for photography, audio/video recording and editing, mixing multi track live and studio recordings, CD and DVD production.
It can still be serviced by me at home. I swap out SSD drives in minutes, replace the battery as needed and have gone from 4GB RAM to 16 over the years. If and when I need a new work and creative project computer, it will be a Hackintosh with all the power, features and ports I find useful. I might even use my 21.5in 4k iMac for the monitor.
The new OS improvements have been removing features from software as willy nilly as they have been removing ports. The updated versions of iMovie/iPhoto(Photos)/Garageband/Pages and Keynote are no longer fluid because they removed key features and turned one-click actions into time consuming multiple clicks and key combinations. The newer iMovie is no longer useful for building a video from a soundtrack. I would get a new version of Final Cut (pro), but that got messed up, too.
The latest amazing improvements might be helpful if you are a consumer using an iPhone or iPad and you want an algorithm make your movies and music for you. Like I mentioned in an earlier reply, I would not have upgraded past Mountain Lion if I didn’t find a few advances in a couple of programs I use regularly.
Phil